Lines Matching refs:dpcm
72 int (*open)(struct loopback_pcm *dpcm);
76 int (*start)(struct loopback_pcm *dpcm);
80 int (*stop)(struct loopback_pcm *dpcm);
82 int (*stop_sync)(struct loopback_pcm *dpcm);
84 int (*close_substream)(struct loopback_pcm *dpcm);
88 int (*close_cable)(struct loopback_pcm *dpcm);
94 void (*dpcm_info)(struct loopback_pcm *dpcm,
165 static inline unsigned int byte_pos(struct loopback_pcm *dpcm, unsigned int x) in byte_pos() argument
167 if (dpcm->pcm_rate_shift == NO_PITCH) { in byte_pos()
171 HZ * (unsigned long long)dpcm->pcm_rate_shift); in byte_pos()
173 return x - (x % dpcm->pcm_salign); in byte_pos()
176 static inline unsigned int frac_pos(struct loopback_pcm *dpcm, unsigned int x) in frac_pos() argument
178 if (dpcm->pcm_rate_shift == NO_PITCH) { /* no pitch */ in frac_pos()
181 x = div_u64(dpcm->pcm_rate_shift * (unsigned long long)x * HZ, in frac_pos()
187 static inline struct loopback_setup *get_setup(struct loopback_pcm *dpcm) in get_setup() argument
189 int device = dpcm->substream->pstr->pcm->device; in get_setup()
191 if (dpcm->substream->stream == SNDRV_PCM_STREAM_PLAYBACK) in get_setup()
193 return &dpcm->loopback->setup[dpcm->substream->number][device]; in get_setup()
196 static inline unsigned int get_notify(struct loopback_pcm *dpcm) in get_notify() argument
198 return get_setup(dpcm)->notify; in get_notify()
201 static inline unsigned int get_rate_shift(struct loopback_pcm *dpcm) in get_rate_shift() argument
203 return get_setup(dpcm)->rate_shift; in get_rate_shift()
207 static int loopback_jiffies_timer_start(struct loopback_pcm *dpcm) in loopback_jiffies_timer_start() argument
210 unsigned int rate_shift = get_rate_shift(dpcm); in loopback_jiffies_timer_start()
212 if (rate_shift != dpcm->pcm_rate_shift) { in loopback_jiffies_timer_start()
213 dpcm->pcm_rate_shift = rate_shift; in loopback_jiffies_timer_start()
214 dpcm->period_size_frac = frac_pos(dpcm, dpcm->pcm_period_size); in loopback_jiffies_timer_start()
216 if (dpcm->period_size_frac <= dpcm->irq_pos) { in loopback_jiffies_timer_start()
217 dpcm->irq_pos %= dpcm->period_size_frac; in loopback_jiffies_timer_start()
218 dpcm->period_update_pending = 1; in loopback_jiffies_timer_start()
220 tick = dpcm->period_size_frac - dpcm->irq_pos; in loopback_jiffies_timer_start()
221 tick = DIV_ROUND_UP(tick, dpcm->pcm_bps); in loopback_jiffies_timer_start()
222 mod_timer(&dpcm->timer, jiffies + tick); in loopback_jiffies_timer_start()
228 static int loopback_snd_timer_start(struct loopback_pcm *dpcm) in loopback_snd_timer_start() argument
230 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_start()
245 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_start()
257 static inline int loopback_jiffies_timer_stop(struct loopback_pcm *dpcm) in loopback_jiffies_timer_stop() argument
259 del_timer(&dpcm->timer); in loopback_jiffies_timer_stop()
260 dpcm->timer.expires = 0; in loopback_jiffies_timer_stop()
266 static int loopback_snd_timer_stop(struct loopback_pcm *dpcm) in loopback_snd_timer_stop() argument
268 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_stop()
277 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_stop()
288 static inline int loopback_jiffies_timer_stop_sync(struct loopback_pcm *dpcm) in loopback_jiffies_timer_stop_sync() argument
290 del_timer_sync(&dpcm->timer); in loopback_jiffies_timer_stop_sync()
296 static int loopback_snd_timer_close_cable(struct loopback_pcm *dpcm) in loopback_snd_timer_close_cable() argument
298 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_close_cable()
370 static void loopback_active_notify(struct loopback_pcm *dpcm) in loopback_active_notify() argument
372 snd_ctl_notify(dpcm->loopback->card, in loopback_active_notify()
374 &get_setup(dpcm)->active_id); in loopback_active_notify()
380 struct loopback_pcm *dpcm = runtime->private_data; in loopback_trigger() local
381 struct loopback_cable *cable = dpcm->cable; in loopback_trigger()
389 dpcm->last_jiffies = jiffies; in loopback_trigger()
390 dpcm->pcm_rate_shift = 0; in loopback_trigger()
391 dpcm->last_drift = 0; in loopback_trigger()
395 err = cable->ops->start(dpcm); in loopback_trigger()
398 loopback_active_notify(dpcm); in loopback_trigger()
404 err = cable->ops->stop(dpcm); in loopback_trigger()
407 loopback_active_notify(dpcm); in loopback_trigger()
413 err = cable->ops->stop(dpcm); in loopback_trigger()
416 loopback_active_notify(dpcm); in loopback_trigger()
421 dpcm->last_jiffies = jiffies; in loopback_trigger()
423 err = cable->ops->start(dpcm); in loopback_trigger()
426 loopback_active_notify(dpcm); in loopback_trigger()
437 struct loopback_pcm *dpcm = runtime->private_data; in params_change() local
438 struct loopback_cable *cable = dpcm->cable; in params_change()
457 struct loopback_pcm *dpcm = runtime->private_data; in loopback_prepare() local
458 struct loopback_cable *cable = dpcm->cable; in loopback_prepare()
462 err = cable->ops->stop_sync(dpcm); in loopback_prepare()
473 dpcm->buf_pos = 0; in loopback_prepare()
474 dpcm->pcm_buffer_size = frames_to_bytes(runtime, runtime->buffer_size); in loopback_prepare()
477 dpcm->silent_size = dpcm->pcm_buffer_size; in loopback_prepare()
482 dpcm->irq_pos = 0; in loopback_prepare()
483 dpcm->period_update_pending = 0; in loopback_prepare()
484 dpcm->pcm_bps = bps; in loopback_prepare()
485 dpcm->pcm_salign = salign; in loopback_prepare()
486 dpcm->pcm_period_size = frames_to_bytes(runtime, runtime->period_size); in loopback_prepare()
488 mutex_lock(&dpcm->loopback->cable_lock); in loopback_prepare()
490 (get_setup(dpcm)->notify && in loopback_prepare()
494 mutex_unlock(&dpcm->loopback->cable_lock); in loopback_prepare()
499 static void clear_capture_buf(struct loopback_pcm *dpcm, unsigned int bytes) in clear_capture_buf() argument
501 struct snd_pcm_runtime *runtime = dpcm->substream->runtime; in clear_capture_buf()
503 unsigned int dst_off = dpcm->buf_pos; in clear_capture_buf()
505 if (dpcm->silent_size >= dpcm->pcm_buffer_size) in clear_capture_buf()
507 if (dpcm->silent_size + bytes > dpcm->pcm_buffer_size) in clear_capture_buf()
508 bytes = dpcm->pcm_buffer_size - dpcm->silent_size; in clear_capture_buf()
512 if (dst_off + size > dpcm->pcm_buffer_size) in clear_capture_buf()
513 size = dpcm->pcm_buffer_size - dst_off; in clear_capture_buf()
517 dpcm->silent_size += size; in clear_capture_buf()
574 static inline unsigned int bytepos_delta(struct loopback_pcm *dpcm, in bytepos_delta() argument
580 last_pos = byte_pos(dpcm, dpcm->irq_pos); in bytepos_delta()
581 dpcm->irq_pos += jiffies_delta * dpcm->pcm_bps; in bytepos_delta()
582 delta = byte_pos(dpcm, dpcm->irq_pos) - last_pos; in bytepos_delta()
583 if (delta >= dpcm->last_drift) in bytepos_delta()
584 delta -= dpcm->last_drift; in bytepos_delta()
585 dpcm->last_drift = 0; in bytepos_delta()
586 if (dpcm->irq_pos >= dpcm->period_size_frac) { in bytepos_delta()
587 dpcm->irq_pos %= dpcm->period_size_frac; in bytepos_delta()
588 dpcm->period_update_pending = 1; in bytepos_delta()
593 static inline void bytepos_finish(struct loopback_pcm *dpcm, in bytepos_finish() argument
596 dpcm->buf_pos += delta; in bytepos_finish()
597 dpcm->buf_pos %= dpcm->pcm_buffer_size; in bytepos_finish()
658 struct loopback_pcm *dpcm = from_timer(dpcm, t, timer); in loopback_jiffies_timer_function() local
661 spin_lock_irqsave(&dpcm->cable->lock, flags); in loopback_jiffies_timer_function()
662 if (loopback_jiffies_timer_pos_update(dpcm->cable) & in loopback_jiffies_timer_function()
663 (1 << dpcm->substream->stream)) { in loopback_jiffies_timer_function()
664 loopback_jiffies_timer_start(dpcm); in loopback_jiffies_timer_function()
665 if (dpcm->period_update_pending) { in loopback_jiffies_timer_function()
666 dpcm->period_update_pending = 0; in loopback_jiffies_timer_function()
667 spin_unlock_irqrestore(&dpcm->cable->lock, flags); in loopback_jiffies_timer_function()
669 snd_pcm_period_elapsed(dpcm->substream); in loopback_jiffies_timer_function()
673 spin_unlock_irqrestore(&dpcm->cable->lock, flags); in loopback_jiffies_timer_function()
681 struct loopback_pcm *dpcm = runtime->private_data; in loopback_snd_timer_check_resolution() local
682 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_check_resolution()
698 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_check_resolution()
837 static void loopback_jiffies_timer_dpcm_info(struct loopback_pcm *dpcm, in loopback_jiffies_timer_dpcm_info() argument
841 dpcm->period_update_pending); in loopback_jiffies_timer_dpcm_info()
842 snd_iprintf(buffer, " irq_pos:\t\t%u\n", dpcm->irq_pos); in loopback_jiffies_timer_dpcm_info()
843 snd_iprintf(buffer, " period_frac:\t%u\n", dpcm->period_size_frac); in loopback_jiffies_timer_dpcm_info()
845 dpcm->last_jiffies, jiffies); in loopback_jiffies_timer_dpcm_info()
846 snd_iprintf(buffer, " timer_expires:\t%lu\n", dpcm->timer.expires); in loopback_jiffies_timer_dpcm_info()
849 static void loopback_snd_timer_dpcm_info(struct loopback_pcm *dpcm, in loopback_snd_timer_dpcm_info() argument
852 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_dpcm_info()
866 struct loopback_pcm *dpcm = runtime->private_data; in loopback_pointer() local
869 spin_lock(&dpcm->cable->lock); in loopback_pointer()
870 if (dpcm->cable->ops->pos_update) in loopback_pointer()
871 dpcm->cable->ops->pos_update(dpcm->cable); in loopback_pointer()
872 pos = dpcm->buf_pos; in loopback_pointer()
873 spin_unlock(&dpcm->cable->lock); in loopback_pointer()
904 struct loopback_pcm *dpcm = runtime->private_data; in loopback_runtime_free() local
905 kfree(dpcm); in loopback_runtime_free()
911 struct loopback_pcm *dpcm = runtime->private_data; in loopback_hw_free() local
912 struct loopback_cable *cable = dpcm->cable; in loopback_hw_free()
914 mutex_lock(&dpcm->loopback->cable_lock); in loopback_hw_free()
916 mutex_unlock(&dpcm->loopback->cable_lock); in loopback_hw_free()
931 struct loopback_pcm *dpcm = rule->private; in rule_format() local
932 struct loopback_cable *cable = dpcm->cable; in rule_format()
936 mutex_lock(&dpcm->loopback->cable_lock); in rule_format()
939 mutex_unlock(&dpcm->loopback->cable_lock); in rule_format()
946 struct loopback_pcm *dpcm = rule->private; in rule_rate() local
947 struct loopback_cable *cable = dpcm->cable; in rule_rate()
950 mutex_lock(&dpcm->loopback->cable_lock); in rule_rate()
953 mutex_unlock(&dpcm->loopback->cable_lock); in rule_rate()
962 struct loopback_pcm *dpcm = rule->private; in rule_channels() local
963 struct loopback_cable *cable = dpcm->cable; in rule_channels()
966 mutex_lock(&dpcm->loopback->cable_lock); in rule_channels()
969 mutex_unlock(&dpcm->loopback->cable_lock); in rule_channels()
978 struct loopback_pcm *dpcm = rule->private; in rule_period_bytes() local
979 struct loopback_cable *cable = dpcm->cable; in rule_period_bytes()
982 mutex_lock(&dpcm->loopback->cable_lock); in rule_period_bytes()
985 mutex_unlock(&dpcm->loopback->cable_lock); in rule_period_bytes()
1007 struct loopback_pcm *dpcm = substream->runtime->private_data; in free_cable() local
1009 if (cable->ops && cable->ops->close_cable && dpcm) in free_cable()
1010 cable->ops->close_cable(dpcm); in free_cable()
1017 static int loopback_jiffies_timer_open(struct loopback_pcm *dpcm) in loopback_jiffies_timer_open() argument
1019 timer_setup(&dpcm->timer, loopback_jiffies_timer_function, 0); in loopback_jiffies_timer_open()
1095 static int loopback_snd_timer_open(struct loopback_pcm *dpcm) in loopback_snd_timer_open() argument
1103 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_open()
1111 err = loopback_parse_timer_id(dpcm->loopback->timer_source, &tid); in loopback_snd_timer_open()
1113 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_open()
1115 dpcm->loopback->timer_source, err); in loopback_snd_timer_open()
1119 cable->snd_timer.stream = dpcm->substream->stream; in loopback_snd_timer_open()
1122 timeri = snd_timer_instance_new(dpcm->loopback->card->id); in loopback_snd_timer_open()
1156 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_open()
1187 struct loopback_pcm *dpcm; in loopback_open() local
1193 dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); in loopback_open()
1194 if (!dpcm) { in loopback_open()
1198 dpcm->loopback = loopback; in loopback_open()
1199 dpcm->substream = substream; in loopback_open()
1216 dpcm->cable = cable; in loopback_open()
1217 runtime->private_data = dpcm; in loopback_open()
1220 err = cable->ops->open(dpcm); in loopback_open()
1232 rule_format, dpcm, in loopback_open()
1238 rule_rate, dpcm, in loopback_open()
1244 rule_channels, dpcm, in loopback_open()
1256 rule_period_bytes, dpcm, in loopback_open()
1266 if (get_notify(dpcm)) in loopback_open()
1272 cable->streams[substream->stream] = dpcm; in loopback_open()
1278 kfree(dpcm); in loopback_open()
1287 struct loopback_pcm *dpcm = substream->runtime->private_data; in loopback_close() local
1290 if (dpcm->cable->ops->close_substream) in loopback_close()
1291 err = dpcm->cable->ops->close_substream(dpcm); in loopback_close()
1606 struct loopback_pcm *dpcm, in print_dpcm_info() argument
1610 if (dpcm == NULL) { in print_dpcm_info()
1614 snd_iprintf(buffer, " buffer_size:\t%u\n", dpcm->pcm_buffer_size); in print_dpcm_info()
1615 snd_iprintf(buffer, " buffer_pos:\t\t%u\n", dpcm->buf_pos); in print_dpcm_info()
1616 snd_iprintf(buffer, " silent_size:\t%u\n", dpcm->silent_size); in print_dpcm_info()
1617 snd_iprintf(buffer, " period_size:\t%u\n", dpcm->pcm_period_size); in print_dpcm_info()
1618 snd_iprintf(buffer, " bytes_per_sec:\t%u\n", dpcm->pcm_bps); in print_dpcm_info()
1619 snd_iprintf(buffer, " sample_align:\t%u\n", dpcm->pcm_salign); in print_dpcm_info()
1620 snd_iprintf(buffer, " rate_shift:\t\t%u\n", dpcm->pcm_rate_shift); in print_dpcm_info()
1621 if (dpcm->cable->ops->dpcm_info) in print_dpcm_info()
1622 dpcm->cable->ops->dpcm_info(dpcm, buffer); in print_dpcm_info()